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METHOD AND APPARATUS FOR EXTRACTING FEATURE POINTS FROM DIGITAL IMAGE

  • US 20090052780A1
  • Filed: 08/22/2008
  • Published: 02/26/2009
  • Est. Priority Date: 08/23/2007
  • Status: Active Grant
First Claim
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1. A method of extracting feature points from a digital image in a multiprocessor system using a scale invariant feature transform (SIFT) technique, the method comprising:

  • dividing an original image into a plurality of regions so as to be allocated to a plurality of processors of the multiprocessor system;

    performing, by the plurality of processors, blurring operations by levels;

    dividing the images blurred by levels into a plurality of regions to be allocated to the processors and calculating, by the plurality of processors, differences of Gaussian (DoGs); and

    generating feature point data according to the calculated DoGs.

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